Renesas Electronics 9FG430
The 9FG430 is a Frequency Timing Generator that provides 4 HCSL differential output pairs. These outputs support PCI-Express Gen3, and QPI applications. The part supports Spread Spectrum and synthesizes several additional output frequencies from either a 14.31818 MHz crystal, a 25 MHz crystal or reference input clock.GENERAL DESCRIPTION
: The 9FG430 also outputs a copy of the reference clock. Complete control of the device is available via strapping pins or via the SMBus inteface. Recommended Application: 4 Output Differential Frequency Generator for PCIe Gen3 and QPI OutputFEATURES
:● 4 - 0.7V current mode differential HCSL output pairs
● 1 - 3.3V LVTTL REF output
FEATURES
/Benefits:● Pin-to-Pin with 9FG104D/Easy upgrade to PCIe Gen3
● Generates common frequencies from 14.318 MHz or 25 MHz; single part supports mulitple applications
● Provides copy of reference output; eleminates need for additional crystal or oscillator
● Unused outputs may be disabled in Hi-Z; save system power
● Device may be configured by SMBus and/or strap pins; can be used in systems without SMBus Key Specifications:
● Cycle-to-cycle jitter: < 50ps with 25MHz input
● Output-to-output skew: <50ps
● Phase jitter: PCIe Gen3 < 1ps rms
● Phase jitter: QPI 9.6GB/s < 0.2ps rms
● 10 ppm synthesis error with 25MHz input and Spread Of...